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Top Roller Blocks

Top Roller Block: Framed type

It is a top roller block installed at the stern to run a trawler's main cable.
Its roller is made of forged S45C carbon steel, and its surface is hardened with induction heating to make it abrasion resistant.

Item No. Safe Working Load Sheave Dimension Body Dimension Eye Size Weight
Diameter Width L B
(metric tons) (mm) (mm) (mm) (mm) (mm) (kg)
3.0 300 200 660 265 50 130
6.0 350 230 750 300 60 200
8.0 400 250 830 330 65 250
10.0 450 250 910 330 70 340
12.0 500 250 960 335 70 420
15.0 600 250 1080 335 75 530
18.0 600 250 1120 350 85 600
20.0 700 255 1290 360 105 750

Top Roller Block: Snatch type

It is a top roller block with an open/close hook for easy removal of the main cable from the block.
Its roller is made of forged S45C carbon steel, and its surface is hardened with induction heating to make it abrasion resistant.

Item No. Safe
Working Load
Sheave Dimension Body Dimension Eye
Size
Weight
Diameter Width L B
(metric tons) (mm) (mm) (mm) (mm) (mm) (kg)
3.0 300 200 730 375 50 180
6.0 350 230 840 425 60 270
8.0 400 250 930 470 65 340
10.0 450 250 1020 500 70 420
12.0 500 250 1090 525 70 540
15.0 600 250 1230 560 75 670
18.0 600 250 1270 590 85 720
20.0 700 255 1480 640 105 1000